PTALF (PetroTal) Cyclically Adjusted Book per Share: $0.52 (As of Mar. 2026)


PTALF PetroTal Corp PTALF
57 GF Score
Price $0.32
GF Value $0.38
Valuation Modestly Undervalued
! 3 Warning Signs
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What is PetroTal Cyclically Adjusted Book per Share?

PetroTal PTALF -0.96% 57 Cyclically Adjusted Book per Share is $0.52 as of Mar. 2026. GuruFocus rates PTALF with a GF Score™ of 57/100 and a GF Value™ of $0.38 (Modestly Undervalued). The stock has 3 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

PetroTal's adjusted book value per share for the three months ended in Mar. 2026 was $0.577. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is $0.52 for the trailing ten years ended in Mar. 2026.

During the past 12 months, PetroTal's average Cyclically Adjusted Book Growth Rate was -93.40% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -62.20% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was -44.90% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was -26.00% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of PetroTal was 7.20% per year. The lowest was -62.20% per year. And the median was -12.10% per year.

As of today (2026-06-29), PetroTal's current stock price is $0.3202. PetroTal's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was $0.52. PetroTal's Cyclically Adjusted PB Ratio of today is 0.62.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of PetroTal was 0.81. The lowest was 0.01. And the median was 0.02.


PetroTal  (OTCPK:PTALF) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

PetroTal's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=0.3202/0.52
=0.62

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of PetroTal was 0.81. The lowest was 0.01. And the median was 0.02.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


PetroTal Cyclically Adjusted Book per Share Related Terms


PetroTal Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for PetroTal's Cyclically Adjusted Book per Share can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

PetroTal Cyclically Adjusted Book per Share Chart

PetroTal Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 42.21 31.62 24.87 10.47 1.64

PetroTal Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Cyclically Adjusted Book per Share Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 7.84 5.61 2.95 1.64 0.52

PTALF vs COP, EOG, FANG: Cyclically Adjusted Book per Share Comparison

For the Oil & Gas E&P subindustry, PetroTal's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB Ratio data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


PetroTal Cyclically Adjusted PB Ratio vs Oil & Gas Industry

For the Oil & Gas industry and Energy sector, PetroTal's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where PetroTal's Cyclically Adjusted PB Ratio falls into.


PTALF
57GF Score
PetroTal Corp PTALF
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

PetroTal Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get Cyclically Adjusted Book per Share.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

For example, PetroTal's adjusted Book Value per Share data for the three months ended in Mar. 2026 was:

Adj_Book= Book Value per Share /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=0.577/330.2130*330.2130
=0.577

Current CPI (Mar. 2026) = 330.2130.

PetroTal Quarterly Data

Book Value per Share CPI Adj_Book
201606 1.916 241.018 2.625
201609 1.803 241.428 2.466
201612 1.878 241.432 2.569
201703 0.742 243.801 1.005
201706 0.117 244.955 0.158
201709 0.129 246.819 0.173
201712 0.153 246.524 0.205
201803 0.150 249.554 0.198
201806 0.147 251.989 0.193
201809 0.148 252.439 0.194
201812 0.144 251.233 0.189
201903 0.000 254.202 0.000
201906 0.149 256.143 0.192
201909 0.154 256.759 0.198
201912 0.180 256.974 0.231
202003 0.134 258.115 0.171
202006 0.151 257.797 0.193
202009 0.155 260.280 0.197
202012 0.168 260.474 0.213
202103 0.206 264.877 0.257
202106 0.220 271.696 0.267
202109 0.239 274.310 0.288
202112 0.247 278.802 0.293
202203 0.324 287.504 0.372
202206 0.423 296.311 0.471
202209 0.421 296.808 0.468
202212 0.463 296.797 0.515
202303 0.477 301.836 0.522
202306 0.501 305.109 0.542
202309 0.504 307.789 0.541
202312 0.509 306.746 0.548
202403 0.535 312.332 0.566
202406 0.558 314.175 0.586
202409 0.552 315.301 0.578
202412 0.561 315.605 0.587
202503 0.576 319.799 0.595
202506 0.581 322.561 0.595
202509 0.570 324.800 0.579
202512 0.564 324.054 0.575
202603 0.577 330.213 0.577

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

What does a Cyclically Adjusted Book per Share of $0.52 mean?
PetroTal (PTALF) has a Cyclically Adjusted Book per Share of $0.52 as of Mar. 2026. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on PetroTal and its competitors.
Is PetroTal's Cyclically Adjusted Book per Share too high?
PetroTal's current Cyclically Adjusted Book per Share is $0.52. Overall, PetroTal has a GF Score™ of 57/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does PetroTal's Cyclically Adjusted Book per Share compare to COP and EOG?
PetroTal's Cyclically Adjusted Book per Share of $0.52 can be compared against companies in the Oil & Gas industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for an Oil & Gas company?
A good Cyclically Adjusted Book per Share depends on the Oil & Gas industry context. However, Cyclically Adjusted Book per Share should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on PetroTal and its competitors. PetroTal's current Cyclically Adjusted Book per Share is $0.52. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is PetroTal stock overvalued right now?
Based on GuruFocus' analysis, PetroTal (PTALF) is currently considered Modestly Undervalued. The stock's GF Value™ is $0.38, compared to a current price of $0.32 — trading 15.7% below its estimated fair value. The current Cyclically Adjusted Book per Share is $0.52. PetroTal's overall GF Score™ is 57/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For PetroTal (PTALF), the current Cyclically Adjusted Book per Share is $0.52 as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is PetroTal (PTALF) Overvalued in 2026?

Based on GuruFocus' analysis, PetroTal stock appears to be undervalued. The current stock price of $0.32 is trading 15.7% below its estimated GF Value™ of $0.38. GuruFocus considers PetroTal to be Modestly Undervalued.

Key valuation signals for PTALF:

  • Cyclically Adjusted Book per Share: $0.52
  • GF Value™: $0.38 vs. price of $0.32 (15.7% below fair value)
  • GF Score™: 57/100 with 3 warning signs

No single metric tells the full story. See the PTALF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


PetroTal Business Description

Industry EnergyOil & Gas
Address 16200 Park Row, Suite 300, Houston, TX, USA, 77084
PetroTal Corp is an energy company. The company is engaged in the exploration, appraisal, and development of crude oil and natural gas in Peru, and South America. The company generates revenues from the sale of crude oil, net of royalties and social fund. The company's operation includes: Block 95, Block 107, and Block 131.
57GF Score

Get the complete analysis for PTALF

Cyclically Adjusted Book per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$0.32
Price
$0.38
GF Value